Trinity Moodle

• With two triple $'s embracing an expression you can make the filter to escape and the code itself is shown (with two embracing double $'s).
• Ex.: $$$a^2$$$ produces $$a^2$$, i.e. prevents the filter to render it as a formula gif.

• A valid expression inside the $'s is rendered as mathematics in an inserted gif image.
• Ex.: $$x=y^2$$ creates 

$x=y^2$

• Two double $'s embracing a valid math expression trigger the filter to generate and insert the formula gif.
• Ex.:  $$a^2$$ produces $a^2$
  

• Type arithmetic operations and "=" as usual.
• Exp.: $$f(x)=x-2b+(3a/c)$$ gives

$f(x)=x-2b+(3a/c)$

• See also keyword "fraction" for extended capabilities.

• Numbers in formulas are interpreted as constants and they are rendered in non-italic roman font face, which is a widely used convention.
• Following this convention, variables are shown in italic.
• Exp.: $$f(x)=3a+x$$ gives

$f(x)=3a+x$

• Syntax: \sqrt[n]{arg} or simply  \sqrt{arg} for \sqrt[2]{arg}
• Ex.: $$\sqrt[3]{8}$$ gives

$\sqrt[3]{8}$

• Ex.: $$\sqrt{-1}$$ gives

$\sqrt{-1}$

• Nesting of roots (and combining with fractions, ...etc.) are possible.
• Ex.: $$\sqrt[n]{\frac{x^n-y^n}{1+u^{2n}}}$$ gives

$\sqrt[n]{\frac{x^n-y^n}{1+u^{2n}}}$

• Ex.: $$\sqrt[3]{-q+\sqrt{q^2+p^3}}$$ gives

$\sqrt[3]{-q+\sqrt{q^2+p^3}}$

• Variables in formulas are rendered in italic roman font face, which is a widely used convention.
• Following this convention, constants are shown as non-italic.
• Exp.: $$f(x)=3a+x$$ gives

$f(x)=3a+x$

• Everthing following the \LARGE command will be output in the largest predefined font size until the system encounters another font size command.
• Note: This command is case sensitive, since large, Large and LARGE are different sizes! 
• Ex.: $$\LARGE~3x$$ gives $\LARGE~3x$

• Everthing following the \Large command will be output in the second largest font size until the system encounters another font size command.
• Note: This command is case sensitive, since large, Large and LARGE are different sizes! 
• Ex.: $$\Large~3x$$ gives $\Large~3x$